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Table 2 HRV parameters (means ± SD) in PD patients and controls

From: Impaired circadian heart rate variability in Parkinson’s disease: a time-domain analysis in ambulatory setting

VariablesPD patients (18)Controls (18)p
SEX(men%)9(50)9(50) 
AGE(years)55.6 ± 8.855.6 ± 8.80.8
SDNN 24(ms)122.6 ± 38.3136.0 ± 21.40.2
SDNN D(ms)84.3 ± 27.996.2 ± 36.50.3
SDNN N(ms)112.6 ± 40.9119 ± 31.30.6
pnn50 24(%)4.5 ± 4.15.3 ± 5.30.6
pnn50 D(%)2.5 ± 2.33.8 ± 4.80.3
pnn50 N(%)9.3 ± 9.48.4 ± 7.60.8
rMSS 24(ms)24.9 ± 725.9 ± 7.70.7
rMSS D(ms)20.8 ± 5.523.4 ± 8.90.3
rMSS N (ms)31.1 ± 11.929.6 ± 9.50.7
SDANN(ms)118.1 ± 38.8124.7 ± 21.20.5
ISDNN(ms)42.9 ± 14.253.4 ± 10.10.01
  1. PD Parkinson’s disease; D day; N night